Basically, right now I have no space. It can work if I move the 480 to the second pcie x16 slot, but I think on my p5b deluxe motherboard, the second x16 speed is halved or something. Not to mention worse airflow.

I see my options as replacing either the sound card or the FW800 card to a pcie x1 card... Which I am not planning of going that far. Unless someone can recommend me a above average pcie x1 sound card.